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Home , Sodium hydrosulfide

Safety Data Sheet

Sodium Hydrosulfide Flake

SECTION 1. IDENTIFICATION Product Identifier Hydrosulfide Flake Other Means of Hydrogen sodium , Sodium Identification Product Code(s) SO3495 Product Family Inorganic Solid Recommended Use Laboratory and industrial use. Restrictions on Use None known. Supplier Identifier Alphachem Limited, 2485 Milltower Court, Mississauga, Ontario, L5N 5Z6, (905) 821-2995 Emergency Phone No. CANUTEC CANADA, 613-996-6666, 24 Hours SDS No. 1398

SECTION 2. HAZARD IDENTIFICATION Classified according to Canada's Hazardous Products Regulations (WHMIS 2015) and the US Hazard Communication Standard (HCS 2012). Classification Acute toxicity (Oral) - Category 3; Acute toxicity (Dermal) - Category 3; Acute toxicity (Inhalation) - Category 4; Skin corrosion - Category 1B; Serious eye damage - Category 1 Label Elements

Signal Word: Danger

Hazard Statement(s): Toxic if swallowed or in contact with skin. Harmful if inhaled. Causes severe skin burns and eye damage.

Precautionary Statement(s): Prevention: Keep away from heat/sparks/open flames/hot surfaces. – No smoking. Do not breathe dust/fume/gas/mist/vapours/spray. Response: IF SWALLOWED: Immediately call a POISON CENTRE or doctor. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. IF ON SKIN: Wash with plenty of water. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Storage: Store locked up. Product Disposal: Identifier: Sodium Hydrosulfide Flake - Ver. 1 DateDispose of Preparation: of contents and containerFebruary in23, accordance 2018 with local, regional, national and international regulations. Date of Last Revision: February 23, 2018 Page 01 of 07 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Storage: Store locked up. Disposal: Dispose of contents and container in accordance with local, regional, national and international regulations. Other Hazards None known.

SECTION 3. COMPOSITION/INFORMATION ON INGREDIENTS Substance: Chemical Name CAS No. % Other Identifiers Other Names

Sodium hydrosulfide, anhydrous 16721-80-5 71.5 - 74.5 Hydrogen , Sodium bisulfide Sodium sulfide, anhydrous 1313-82-2 2.5 Disodium monosulfide 7772-98-7 1 Disodium thiosulphate Notes (plus 25% water of crystallization).

SECTION 4. FIRST-AID MEASURES First-aid Measures Inhalation Remove source of exposure or move to fresh air. If breathing is difficult, trained personnel should administer emergency oxygen if advised to do so by Poison Centre or doctor. Avoid mouth-to-mouth contact by using a barrier device. Immediately call a Poison Centre or doctor. Skin Contact Immediately rinse with lukewarm, gently flowing water for 15-20 minutes. Immediately call a Poison Centre or doctor. Eye Contact Immediately rinse the contaminated eye(s) with lukewarm, gently flowing water for 15-20 minutes, while holding the eyelid(s) open. Immediately call a Poison Centre or doctor. Specific treatment is required. Ingestion Rinse mouth with water. Do not induce vomiting. If vomiting occurs naturally, have victim lean forward to reduce risk of aspiration. Immediately call a Poison Centre or doctor. First-aid Comments Provide general supportive measures (comfort, warmth, rest). Do not leave the victim unattended. All first aid procedures should be periodically reviewed by a doctor familiar with the material and its condition of use in the workplace. Most Important Symptoms and Effects, Acute and Delayed If in eyes: contact causes severe burns with redness, swelling, pain and blurred vision. Permanent damage including blindness can result. If on skin: contact can cause pain, redness, burns, and blistering. Permanent scarring can result. Immediate Medical Attention and Special Treatment Special Instructions General advice, consult a physician. Show this safety data sheet to the doctor in attendance. Move out of dangerous area.

Product Identifier: Sodium Hydrosulfide Flake - Ver. 1 Date of Preparation: February 23, 2018 Date of Last Revision: February 23, 2018 Page 02 of 07 SECTION 5. FIRE-FIGHTING MEASURES Extinguishing Media Suitable Extinguishing Media Carbon dioxide, dry chemical powder, appropriate foam, water spray or fog. Unsuitable Extinguishing Media None known. Specific Hazards Arising from the Product Heating increases the release of toxic vapour. Closed containers may rupture violently when heated releasing contents. In a fire, the following hazardous materials may be generated: very toxic, flammable ; corrosive . Special Protective Equipment and Precautions for Fire-fighters Evacuate area. Fight fire from a safe distance or a protected location. Approach fire from upwind to avoid hazardous vapours or gases. Move containers from fire area if it can be done without risk. Otherwise, use water in flooding quantities as a spray or fog to keep fire-exposed containers cool and absorb heat. Knock down vapours or gases with water fog or fine water spray. For a massive fire, immediately evacuate the area and use unmanned hose holder or monitor nozzles. Dike and recover contaminated water for appropriate disposal. Chemical protective clothing (e.g. chemical splash suit) and positive pressure SCBA may be necessary.

SECTION 6. ACCIDENTAL RELEASE MEASURES Personal Precautions, Protective Equipment, and Emergency Procedures Use the personal protective equipment recommended in Section 8 of this safety data sheet. Increase ventilation to area or move leaking container to a well-ventilated and secure area. Eliminate all ignition sources. Use grounded, explosion-proof equipment. Remove or isolate incompatible materials as well as other hazardous materials. Notify government occupational health and safety and environmental authorities. Environmental Precautions Do not allow into any sewer, on the ground or into any waterway. If the spill is inside a building, prevent product from entering drains, ventilation systems and confined areas. Methods and Materials for Containment and Cleaning Up Avoid generating dust. Contain spill with earth, sand, or absorbent material which does not react with spilled material. Small spills of solutions: contain and soak up spill with absorbent that does not react with spilled product. Place used absorbent into suitable, covered, labelled containers for disposal. Flush spill area. Small spills of solids: collect using shovel/scoop or approved HEPA vacuum and place in a suitable container for disposal. Flush spill area. Large spills or leaks: contact emergency services and manufacturer/supplier for advice.

SECTION 7. HANDLING AND STORAGE Precautions for Safe Handling Wear personal protective equipment to avoid direct contact with this chemical. Immediately report leaks, spills or failures of the safety equipment (e.g. ventilation system). Do not breathe in this product. Avoid generating dusts. Only use where there is adequate ventilation. Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. Prevent accidental contact with incompatible chemicals. Never add water to a corrosive. Always add corrosives slowly to COLD water. Keep containers tightly closed when not in use or empty. Conditions for Safe Storage Store in an area that is: cool, dry, well-ventilated, out of direct sunlight and away from heat and ignition sources, separate from incompatible materials (see Section 10: Stability and Reactivity). Keep amount in storage to a minimum. Comply with all applicable health and safety regulations, fire and building codes.

SECTION 8. EXPOSURE CONTROLS/PERSONAL PROTECTION Control Parameters

Product Identifier: Sodium Hydrosulfide Flake - Ver. 1 Date of Preparation: February 23, 2018 Date of Last Revision: February 23, 2018 Page 03 of 07 SECTION 8. EXPOSURE CONTROLS/PERSONAL PROTECTION Control Parameters ACGIH TLV® OSHA PEL AIHA WEEL Chemical Name TWA STEL TWA Ceiling 8-hr TWA TWA Sodium hydrosulfide, anhydrous Not Not established established Sodium sulfide, anhydrous Not Not established established Sodium thiosulfate Not Not established established Appropriate Engineering Controls Use local exhaust ventilation and enclosure, if necessary, to control amount in the air. Use a corrosion-resistant exhaust ventilation system separate from other ventilation systems. Exhaust directly to the outside, taking any necessary precautions for environmental protection. Individual Protection Measures Eye/Face Protection Wear chemical safety goggles and face shield when contact is possible. Skin Protection Wear chemical protective clothing e.g. gloves, aprons, boots. Respiratory Protection For non-routine or emergency situations: wear a NIOSH approved powered air-purifying respirator with an appropriate cartridge.

SECTION 9. PHYSICAL AND CHEMICAL PROPERTIES Basic Physical and Chemical Properties Appearance White - yellow flakes. Absorbs moisture from the air. Odour Rotten eggs Odour Threshold Not available pH 11.2 (1% solution) /Freezing Point 52 ºC (126 ºF) (melting); 52 ºC (126 ºF) (freezing) Initial Boiling Point/Range 164 ºC (327 ºF) Flash Point Not available Evaporation Rate Not available Flammability (solid, gas) Not available Upper/Lower Flammability or Not available (upper); Not applicable (lower) Explosive Limit Vapour Pressure Not available Vapour Density (air = 1) Not available Relative Density (water = 1) ~ 1.79 Not available in water; Not available (in other liquids) Partition Coefficient, Not available n-Octanol/Water (Log Kow) Auto-ignition Temperature Not available Decomposition Temperature Not available Viscosity Not available (kinematic); Not available (dynamic) Other Information Physical State Solid Molecular Weight 56.06

Product Identifier: Sodium Hydrosulfide Flake - Ver. 1 Date of Preparation: February 23, 2018 Date of Last Revision: February 23, 2018 Page 04 of 07 SECTION 10. STABILITY AND REACTIVITY Reactivity None known. Chemical Stability Normally stable. Unstable under certain conditions - see Conditions to Avoid. Possibility of Hazardous Reactions Hazardous polymerization does not occur. Conditions to Avoid Exposure to air. Generation of dust. Open flames, sparks, static discharge, heat and other ignition sources. Incompatible Materials Strong oxidizing agents (e.g. perchloric acid), strong acids (e.g. hydrochloric acid), halogens (e.g. chlorine), strong bases (e.g. ). Hazardous Decomposition Products Very toxic, flammable hydrogen sulfide; corrosive sulfur oxides.

SECTION 11. TOXICOLOGICAL INFORMATION Likely Routes of Exposure Inhalation; skin contact; eye contact; ingestion. Acute Toxicity

Chemical Name LC50 LD50 (oral) LD50 (dermal) Sodium hydrosulfide, Not available 50-100 mg/kg (rat) > 200 mg/kg (rabbit) anhydrous Sodium sulfide, anhydrous Not available 208 mg/kg (rat) < 340 mg/kg (rabbit) Sodium thiosulfate Not available > 5000 mg/kg (rat) Not available LD50 (oral): 58.5 mg/kg (rat) High toxicity. LD50 (dermal): 177.8 mg/kg (rabbit) High toxicity. Skin Corrosion/Irritation Animal tests show skin corrosion. Serious Eye Damage/Irritation Causes serious eye damage based on skin corrosion information. STOT (Specific Target Organ Toxicity) - Single Exposure Inhalation At high concentrations may cause severe nose and throat irritation. Ingestion Toxic, can cause death May cause severe irritation or burns to the mouth, throat and stomach. Aspiration Hazard No information was located. STOT (Specific Target Organ Toxicity) - Repeated Exposure No information was located. Respiratory and/or Skin Sensitization No information was located. Carcinogenicity

Chemical Name IARC ACGIH® NTP OSHA Sodium hydrosulfide, Not Listed Not designated Not Listed Not Listed anhydrous ReproductiveProduct Identifier: Toxicity Sodium Hydrosulfide Flake - Ver. 1 Date of Preparation: February 23, 2018 Date of Last Revision: February 23, 2018 Page 05 of 07 anhydrous Sodium sulfide, anhydrous Not evaluated Not Listed Not Listed Not Listed Sodium thiosulfate Not Listed Not Listed Not Listed Not Listed Reproductive Toxicity Development of Offspring No information was located. Sexual Function and Fertility No information was located. Effects on or via Lactation No information was located. Germ Cell Mutagenicity No information was located. Interactive Effects No information was located.

SECTION 12. ECOLOGICAL INFORMATION This section is not required by WHMIS. This section is not required by OSHA HCS 2012.

SECTION 13. DISPOSAL CONSIDERATIONS Disposal Methods Bury in a licensed landfill according to federal, provincial/state, and local regulations.

SECTION 14. TRANSPORT INFORMATION

Transport Hazard Packing Regulation UN No. Proper Shipping Name Class(es) Group

Canadian TDG UN2949 SODIUM HYDROSULFIDE with not less than 25 8 - Corrosive II percent water of crystallization US DOT UN2949 SODIUM HYDROSULFIDE with not less than 25 8 - Corrosive II percent water of crystallization Special Precautions Not applicable Transport in Bulk According to Annex II of MARPOL 73/78 and the IBC Code Not applicable

SECTION 15. REGULATORY INFORMATION Safety, Health and Environmental Regulations Canada Domestic Substances List (DSL) / Non-Domestic Substances List (NDSL) All ingredients are listed on the DSL. USA Toxic Substances Control Act (TSCA) Section 8(b) All ingredients are listed on the TSCA Inventory.

SECTION 16. OTHER INFORMATION SDS Prepared By Alphachem Limited Phone No. (905)-821-2995 Product Identifier: Sodium Hydrosulfide Flake - Ver. 1 Date of Preparation: February 23, 2018 Date of Last Revision: February 23, 2018 Page 06 of 07 Phone No. (905)-821-2995 Date of Preparation February 23, 2018 Date of Last Revision February 23, 2018 References CHEMINFO database. Canadian Centre for Occupational Health and Safety (CCOHS). Disclaimer This document is offered only as a guide in the safe handling of the above product, and has been prepared from the best information currently available. It is not intended to be all-inclusive and the conditions of use may involve other additional considerations. Since Alphachem Limited cannot anticipate or control the conditions under which the product may be used, it will not be liable for any claims, damages or losses which may result from the use or reliance on any information herein.

Product Identifier: Sodium Hydrosulfide Flake - Ver. 1 Date of Preparation: February 23, 2018 Date of Last Revision: February 23, 2018 Page 07 of 07